Show short language name in Widget Options doesn't work

Hello,

first of all, thank you for your work. I’ve been working with qtranslate since 2 years ago, but lately, with WP 4.0 I’ve been in troubled, but your plugin works like a champ! Thanks!

By other hand, your widget, doesn’t work completely. The checkbox to show long or short name of the language in the language selector doesn’t work. If you check the checkbox, and save the configuration, remain unchecked.

Any possibility or way to fix this?

Thanks again

https://www.ads-software.com/plugins/mqtranslate/